51382113923637 has 40 divisors (see below), whose sum is σ = 87724619212032. Its totient is φ = 29360043367200.

The previous prime is 51382113923617. The next prime is 51382113923639. The reversal of 51382113923637 is 73632931128315.

It is a happy number.

51382113923637 is a `hidden beast` number, since 5 + 1 + 3 + 8 + 211 + 392 + 3 + 6 + 37 = 666.

It is not a de Polignac number, because 51382113923637 - 2⁷ = 51382113923509 is a prime.

It is a super-2 number, since 2×51382113923637² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51382113923639) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12612187 + ... + 16181207.

Almost surely, 2^{51382113923637} is an apocalyptic number.

It is an amenable number.

51382113923637 is a deficient number, since it is larger than the sum of its proper divisors (36342505288395).

51382113923637 is a wasteful number, since it uses less digits than its factorization.

51382113923637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594431 (or 3594422 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 51382113923637 in words is "fifty-one trillion, three hundred eighty-two billion, one hundred thirteen million, nine hundred twenty-three thousand, six hundred thirty-seven".